xref: /aosp_15_r20/hardware/interfaces/tests/expression/1.0/IExpression.hal (revision 4d7e907c777eeecc4c5bd7cf640a754fac206ff7)

/*
 * Copyright (C) 2016 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package [email protected];

interface IExpression {
  enum UInt64LiteralTypeGuessing : uint64_t {
    noSuffixDec1 = 0,
    noSuffixDec2 = 1,
    noSuffixDec3 = -1,
    noSuffixDec4 = ~0,
    noSuffixDec5 = 2147483647,
    noSuffixDec6 = -2147483648,
    noSuffixDec7 = 2147483648,
    noSuffixDec8 = -2147483649,
    noSuffixDec9 = ~(-1),
    noSuffixHex1 = 0x7fffffff,
    noSuffixHex2 = 0x80000000,
    noSuffixHex3 = 0xffffffff,
    longHex1 = 0xffffffffl,
    longHex2 = 0Xfffffffff,
    longHex3 = 0x7fffffffffffffff,
    longHex4 = 0x8000000000000000,
    longHex5 = 0xFFFFFFFFFFFFFFFF,
  };

  enum SuffixedLiteralTypeGuessing : int32_t {
    // Should be all true / ones.
    // dec literals are either int32_t or int64_t
    decInt32_1 = (~(-1)) == 0,
    decInt32_2 = -(1 << 31) == (1 << 31),
    decInt64_1 = (~(-1l)) == 0,
    decInt64_2 = (~4294967295) != 0,
    decInt64_3 = (~4294967295l) != 0,
    decInt64_4 = -(1l << 63) == (1l << 63),
    // hex literals could be (u)int32_t or (u)int64_t
    // 0x7fffffff is int32_t, hence can be negated
    hexInt32_1 = -0x7fffffff < 0,
    // 0x80000000 is uint32_t; if it were int32_t then -(int32_t)0x80000000 == (int32_t)0x80000000 > 0
    hexUInt32_1 = -0x80000000 > 0,
    // 0xFFFFFFFF is uint32_t, not int64_t; if it were int64_t then ~(int64_t)0xFFFFFFFF != 0
    hexUInt32_2 = ~0xFFFFFFFF == 0,
    // 0x7FFFFFFFFFFFFFFF is int64_t, hence can be negated
    hexInt64_1 = -0x7FFFFFFFFFFFFFFF < 0,
    // 0x8000000000000000 is uint64_t
    hexUInt64_1 = -0x8000000000000000 > 0,
  };

  enum Int64LiteralTypeGuessing : int64_t {
    // both treated int32_t, sum = (int64_t)(int32_t)0x80000000 = (int64_t)(-2147483648)
    noSuffixDec11 = 1 + 0x7fffffff,
    // 0x80000000 is uint32_t, sum = (int64_t)(uint32_t)0x7fffffff = (int64_t)(2147483647)
    noSuffixDec12 = 0x80000000 - 1,
  };

  enum Int32BitShifting : int32_t {
    // Shifting for more than 31 bits are undefined. Not tested.
    int32BitShift1 = 1 << 31,
  };

  enum UInt32BitShifting : uint32_t {
    uint32BitShift1 = 1 << 31,
  };

  enum Int64BitShifting : int64_t {
    int64BitShift1 = 1l << 63,
  };

  enum UInt64BitShifting : uint64_t {
    uint64BitShift1 = 1l << 63,
  };

  enum Precedence : int32_t {
    literal = 4,
    neg = -4,
    literalL = -4L,
    hex = 0xffffffff,
    hexLong = 0xffffffffl,
    hexLong2 = 0xfffffffff,
    simpleArithmetic = 4 + 1,
    simpleArithmetic2 = 2 + 3 - 4,
    simpleArithmetic3 = 2 - 3 + 4,
    simpleBoolExpr = 1 == 4,
    simpleLogical = 1 && 1,
    simpleLogical2 = 1 || 1 && 0,  // && higher than ||
    simpleComp = 1 < 2,
    boolExpr1 = !((3 != 4 || (2 < 3 <= 3 > 4)) >= 0),
    boolExpr = 1 == 7 && !((3 != 4 || (2 < 3 <= 3 > 4)) >= 0),
    simpleBitShift = 1 << 2,
    simpleBitShift2 = 4 >> 1,
    simpleBitShiftNeg = 4 << -1,
    simpleArithmeticRightShift = 1 << 31 >> 31,
    simpleBitExpr = 1 | 16 >> 2,
    simpleBitExpr2 = 0x0f ^ 0x33 & 0x99, // & higher than ^
    bitExpr = ~42 & (1 << 3 | 16 >> 2) ^ 7,
    arithmeticExpr = 2 + 3 - 4 * -7 / (10 % 3),
    messyExpr = 2 + (-3&4 / 7),
    paranExpr = (((((1 + 1))))),
    ternary = 1?2:3,
    ternary2 = 1&&2?3:4,
    complicatedTernary2 = 1 - 1 && 2 + 3 || 5 ? 7 * 8 : -3,
  };

  enum OperatorSanityCheck : int32_t {
    // Should be all true / ones.
    plus = (1 + 2) == 3,
    minus = (8 - 9) == -1,
    product = (9 * 9) == 81,
    division = (29 / 3) == 9,
    mod = (29 % 3) == 2,
    bit_or = (0xC0010000 | 0xF00D) == (0xC001F00D),
    bit_or2 = (10 | 6) == 14,
    bit_and = (10 & 6) == 2,
    bit_xor = (10 ^ 6) == 12,
    lt1 = 6 < 10,
    lt2 = (10 < 10) == 0,
    gt1 = (6 > 10) == 0,
    gt2 = (10 > 10) == 0,
    gte1 = 19 >= 10,
    gte2 = 10 >= 10,
    lte1 = 5 <= 10,
    lte2 = (19 <= 10) == 0,
    ne1 = 19 != 10,
    ne2 = (10 != 10) == 0,
    lshift = (22 << 1) == 44,
    rshift = (11 >> 1) == 5,
    logor1 = (1 || 0) == 1,
    logor2 = (1 || 1) == 1,
    logor3 = (0 || 0) == 0,
    logor4 = (0 || 1) == 1,
    logand1 = (1 && 0) == 0,
    logand2 = (1 && 1) == 1,
    logand3 = (0 && 0) == 0,
    logand4 = (0 && 1) == 0,
  };

  // Tests for enum tags
  enum NoElements : uint32_t {};
  enum OneElement : uint32_t {A};
  enum TwoElement : uint32_t {A,B};
  enum TwoCollidingElements : uint32_t {A=1,B=1};
  enum ThreeFromInheritance : TwoElement {C};
  enum ThreeFromDoubleInheritance : ThreeFromInheritance {};
  enum ThreeCollidingFromInheritance : TwoCollidingElements {C};

  enum EnumTagTest : uint32_t {
    a = NoElements#len == 0,
    b = OneElement#len == 1,
    c = TwoElement#len == 2,
    d = TwoCollidingElements#len == 2,
    e = ThreeFromInheritance#len == 3,
    f = ThreeFromDoubleInheritance#len == 3,
    g = ThreeCollidingFromInheritance#len == 3,

    // fine to reference current enum as well
    h = EnumTagTest#len == 8,
  };

  enum Grayscale : int8_t {
    WHITE = 126,
    GRAY, // 127
    DARK_GRAY, // -128
    BLACK // -127
  };

  enum Color : Grayscale {
    RED, // -126
    RUBY = 0,
    GREEN, // 1
    BLUE = 5,
    CYAN, // 6
    ORANGE, // 7
    ROSE = WHITE,
  };

  enum Foo1 : int8_t {};
  enum Foo2 : Foo1 {};
  enum Foo3 : Foo2 {
    BAR1, // 0
    BAR2 = 10,
  };
  enum Foo4 : Foo3 {
    BAR3, // 11
    BAR4 = BAR2 + BAR3 // 21
  };

  enum Number : uint8_t {
    MAX = 255,
    MAX_PLUS_1, // 0
    MAX_PLUS_2 // 1
  };

  enum Constants : int32_t {
    CONST_FOO,
    CONST_BAR = 70,
    MAX_ARRAY_SIZE = 20,
    MAX_ARRAY_SIZE2,
    MAX_ARRAY_SIZE3 = MAX_ARRAY_SIZE + MAX_ARRAY_SIZE,
    MY_INT32_MAX_MINUS_1 = 0x7FFFFFFE,
    MY_INT32_MAX, // 0x7FFFFFFF
    MY_INT32_MIN, // 0x80000000
    MY_INT32_MIN_PLUS_1, // 0x80000001
  };

  foo1(int32_t[Constants:CONST_FOO + 1] array);
  foo2(int32_t[5 + 8] array);
  foo3(int32_t[Constants:MAX_ARRAY_SIZE] array);
};